Fibrillation in Screen Printing

Why does my new shirt look old? There is a simple one-word answer for this question: Fibrillation. To simplify a complicated issue, fibrillation in screen printing is when the fibers of a garment stick through the print, giving the shirt a post-washed or vintage, faded look. It is often mistakenly assumed to be an ink problem such as wash-out. The difference between wash-out and fibrillation, is that wash-out tends to happen in patches, whereas fibrillation appears as a more even “faded” look to the print. See the gallery of photos below – a real life example of fibrillation: